/Engine/Plugins/Runtime/RigVM/Source/RigVMDeveloper/Public/RigVMModel/RigVMLink.h
Returns the source Node of this Link (or nullptr)
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=RigVMLink) [URigVMNode](API\Plugins\RigVMDeveloper\RigVMModel\URigVMNode) * GetSourceNode() const